Ball throwing machine



FIG. 1 is a perspective view of the ball throwing machine showing our new design.

FIG. 2 is a plan view.

FIG. 3 is a right side elevation.

FIG. 4 is a front elevation.

FIG. 5 is a left side elevation.

FIG. 6 is a rear elevation. 

The ornamental design for a ball throwing machine, as shown. 